In case you missed anything, here’s a quick roundup of some of the news that powered AllThingsD this week:

The chest-beating of “bullshit metrics” over the past few weeks by its mobile messaging competitors seems to have frazzled the folks at WhatsApp, which this week very pointedly announced that it had 400 million active users.

Tristan Walker had a lot of startup ideas as entrepreneur-in-residence at Andreessen Horowitz, but the one he decided to pursue was his most authentic: Walker & Company Brands, a next-generation Procter & Gamble making health and beauty simple for people of color.

Our own Walt Mossberg has been reviewing consumer technology products for the Wall Street Journal and AllThingsD for the past 22 years. Now, as team ATD prepares for a new adventure next year, Walt looked back at the top 12 most influential products he reviewed in the past two decades.

In a bid to sell even more of its Kindle Fire HDX tablets, Amazon is trying something new: Starting this week, it began letting buyers pay off the tablets on an installment plan.

It’s sweeter than a candy cane doused in eggnog, but Apple’s new Christmasy ad for the iPhone and Apple TV went viral this week.

We’re in the midst of yet another videogame console war, but Sony and Microsoft have very different ideas of what a console should be. Bonnie Cha writes that, at least for gamers, the PlayStation 4 “makes the right play.”

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